Al Gore has profited from zinc mining that has released millions of pounds of potentially toxic substances near his farmstead

Former U.S. Sen. Albert Gore Sr. bought about 88 acres along the Caney Fork River from Occidental Minerals, a subsidiary of Occidental Petroleum, for $160,000. Included in the deal was the subsurface area. The rights to the minerals below ground were then leased back to Occidental.

On the same day, Gore Sr. sold the land and subsurface area to his 25-year-old son and daughter-in-law for $140,000. The mineral lease to Occidental was put in their names.

In the five-year period from 1998 to 2003, before the mines were shuttered, 16.6 million pounds of toxic substances were released into the air, water and land at the Gordonsville site, according to the EPA’s Toxic Release Inventory data, and 2.6 million pounds were released at the Cumberland site. Most of that was the zinc pulled from ground during mining.

In its last year of full operation in 2002, the Gordonsville-Cumberland mines ranked 22nd among all metal mining operations in the U.S., with about 4.1 million pounds of toxic releases. The top releasing mine, Red Dog Mine in Alaska, emitted about 482 million pounds that year. In 2002, Smith County ranked 39th out of more than 3,000 U.S. counties for lead compound releases and 21st for cadmium releases, according to tallies by Scorecard, a Web site run by environmentalists that compiles federal data.

Even Gore noted in his letter that, according to Scorecard, “pollution releases from the mine in 2002 placed it among the ‘dirtiest/worst facilities’ in the U.S.”